Casement sash operating means



June 6, 1933.

J. H. SHEARD CASEMENT SASH OPERATING MEANS Filed March 25. 1931 MN @NHWITNESSES INVENTOR: Jae 0km TTORNEYS.

Patented June 6, 1933 VUNITED s'r-A'rss PATENT OFFICE JOSEPH H.sIIEARI), on PHILADELPHIA, PENNSYLVANIA, ASSIGNOR r DAVID LUP'roN's soNsCOMPANY, or PHILADELPHIA, PENNSYLVANIA, A CORPORATION 1-1 I oPPENNsYLvANIA oAsEiyIENrr SASH OPERATING MEANS Application filed March23, 1931. Serial No. 524,575. V

screw 19 to the web 20 of the sash rail 13 This invention relates tomeans for operating the pivoted sashes of casement w1ndows and the like;and ithas more particularmreference tometallic'casenients inconnectionflwith which protective screens are "used, and wherein thebottom rail of the sash closes against the frame with formation of ahollow therebetween.

invention has for its aim the provission of a simple and easilyactuatable operating means for .afmetallic casement such as referred toabove, which admits of partial concealment in the hollow betweenthebottom, rail of the sash and the frame sill rail; which is compact andreadily accommodated on the frame sill rail below the screen used with,the window, so that the sash be opened and closed without necessity forremoving or otherwise disturbing the screen; and which is furthermoreadvantageous in that it is out of the way when the window is closed. I

In the. drawing hereunto attached, Iisafragmentary in side elevationvof.a conventional type of metallic casement window fitted with my improvedsash operat- 'ing means.

FigbIIisaplan section taken as indicated by the arrowsII-II in Fig. I;and, Fig. III is a detail sectional view taken as indicated by thearrows IIIIII in Fig. II.

The frame and the sash 11 of the case ment herein shown for convenienceof i1- lustrating. my invention, are both constructed from metallicrails of Z-cross section, the sash being supported for free swingingmovement by hinges whereof one is indicated at 12 in Fig. II. As shownin Fig. III, the bottom rail 13 of the sash 11 closes against the sillrail 14 of the frame 10 with a double weather seal and with formation ofan air space or hollow 15 therebetween. The window is in this instanceprovlded with a screen 16 which 1s secured against the inside of theframe 10 by suitable means not illustrated, p

The operating means, constituting my present invention, comprises anactuating lever 18 which is pivotally connected by a adjacent the sashpivot 12 within the hollow 15; and a slotted bracket 21, on the sillrail 14 of the frame 10 below the screen 16, l

dial portion 18b embodying reversely-curving portions which extendsdiagonally inward of the window through the bracket 21 and intimatelyengages the opposite side edges 21a, 21b, of the slot in the saidbracket; and a handle portion 180 which lies parallel with the sill rail14 of the frame lOand is therefore normally out of the way.

The bracket 21 is substantially semi-circular iniplan and of suchvertical depth as to bereadily attachable to the sill rail 14 of theframe 10 below the screen 16, by means of screws 22 that extend throughapertured ears 23 of said bracket and take into the upstanding fiange 24of the sill rail 14. The 31,

slot of the bracket isflared outwardly to permit angular movement of theactuating lever 18 and registers with a slot 25 cut through the sillrail flange 24.

To open the window, the handle portion 180 of the actuating lever 18 isgrasped, and the said lever swung counter-clockwise. Due to intimatecontact with the side edges 21a, 21b of the slot in the bracket 21, aswell as to the proportioning and the allocation of the parts, theactuating lever 18 is constrained to swing about a substantially fixedpoint during the earlier part ofit-s movement, i. e., until the sash 11is about half open, the maximum power of the lever 18 being thusavailable in initiating the opening of the sash 11. Swinging ofthe sash11 through the final halfof its opening movement is accomplished by aforward thrust of the actuatinglever 18 incident to which the latter isafforded variable fulcrum support ina manner obvious from Fig. II of thedrawing. Closing of the sash 11 is accomplished conversely, i. e. firstby pulling on the actuating lever 18 and finally by turning it clockwisewhen its maximum power is again available in urging the sash 11 intofirm engagement with the casement frame 10.

In order that the sash 11 may be held from displacement under windpressure in different positions of adjustment, I have provided means onthe bracket 21 to clamp the actuating lever 18. has the form of a thumblever 26 with a screw stud 27 engaged in the lower part of the bracket21 and adapted to bear upward against the actuating lever 18 after themanner shown in Fig. III.

Having thus described my invention, I claim:

1. Sash operating means for a casement window or the like wherein thebottom rail of the sash closes against the sill rail of the frame withformation of a hollow thercbetween, comprising a bracket having anoutwardly-flaring slot secured to the frame sill rail; and an actuatinglever having a straight portion normally extending longitudinally withinthe hollow aforesaid, when the sash is closed, and pivotally connectedto the bottom sash rail adjacent the sash hinge; a medial portionnormally extending diagonally inward through the slot of the bracket onthe sill rail adapted to constrain said lever to swing about asubstantially-fixed point by intimate coaction with the flaring sides ofthe slot aforesaid; and a handle portion beyond the medial portionnormally lying parallel to the sill rail.

2. In a casement window, the combination with a window frame comprisinga sill rail having an upstanding flange with means affording anoutwardly-flaring fulcrum slot, and a sash frame whose bottom railcloses against said flange with formation of a hollow between the rails,of an actuating lever embodying an intermediate section ofreversely-curved portions, said lever being pivotally connected at oneend to the sash and thence extending lengthwise in the hollow aforesaid,when the sash is closed, and through the frame flange indoors, Via saidoutwardly-flaring fulcrum slot, whereby said lever is affordedsubstantially-stationary as well as periodic variable fulcrum supportand capacity for sliding movement during opening and closing of thewindow sash.

3. Sash operating means for a screened casement window or the likewherein the bottom rail of the sash closes against an aperturedupstanding flange on the frame sill rail, with formation of a hollowbetween the rails; comprising a bracket having an outwardly-flaring slotand secured to the frame sill: rail over its opening and below .the

This clamping means screen; and an actuating lever embodying anintermediate section of reversely-curved portions, said lever beingpivotally connected at one end to the sash and thence extendinglengthwise in said hollow, when the sash is closed, and through theflange opening and the bracket slot indoors; so that thereversely-curving lever section by intimate coaction with the slotflaring sides is afforded substantially stationary as well as periodicvariable fulcrum support in the bracket with capacity for slidingmovement during opening and closing of the window sash.

4.. Sash operating means for screened casement windows or the likewherein the bottom rail of the sash closes against an aperturedupstanding flange on the frame sill rail, with formation of a hollowbetween said rails; comprising a bracket of substantially semicircularformation with an outwardly-flaring slot therethrough, said bracketbeing secured to the frame sill rail over the opening therein below thescreen; an actuating lever including an intermediate section ofreversely-curved contour, said lever being pivotally connected at oneend to the sash and thence extending lengthwise in said hollow, when thesash is closed, and through the flange opening and the bracket slotindoors; whereby the reversely-curving portion of the lever by intimatecontact with the sides of the bracket flaring slot is affordedsubstantiallystationary as well as periodic variable fulcrum support inthe bracket with capacity for sliding movement during opening andclosing of the window sash; and a thumb lever mounted by a screw stud inthe bracket aforesaid for coaction with the actuating lever to hold thesash against wind pressure in different positions of adjustment.

In testimony whereof, I have hereunto signed my name at Philadelphia,Pennsylvania, this 9th day of March, 1931.

JOSEPH H. SHEARD.

